What is 417 Hz?
417 Hz is a Solfeggio frequency between G♯4 and A4, marketed for “facilitating change.”
417 Hz corresponds to the syllable “Re” in the modern Solfeggio list. There is no reliable scientific evidence that listening to this frequency heals the body, repairs DNA or changes your mood beyond ordinary relaxation. Treat it as a musical tone and a beautiful pattern, not a treatment.
At about 7 cents above G♯4 (415.3 Hz) it is very close to A4 in Baroque tuning, where A was often set near 415 Hz.
Read more: Solfeggio Frequencies Explained: History, Claims and Evidence
| Nearest note (A4 = 440 Hz) | G♯4 (415.3 Hz), +7 cents |
|---|---|
| Wavelength in air | 82.3 cm |
| Period | 2.4 ms per cycle |
| Simulator Chladni mode | (2, 1) |
What the 417 Hz pattern looks like
Voronoi mode splits the plate into irregular cells, a reminder that real plates rarely give perfectly regular figures.
The simulator above is already set to 417 Hz. Press Play in the Slider tab to hear the tone, switch pattern modes to compare shapes, and use Record video or Export PNG to keep the result. The address bar always holds a link to exactly what you see, so you can share it.
417 Hz FAQ
Is 417 Hz the same as Baroque A?
Close. Baroque ensembles often tune A to 415 Hz, only a few hertz below 417 Hz.